I don't know if you've been watching the games. I've seen every one.
Carter has been awful - possibly not match fit.
Hyam has been awful - he is obviously missing Batth, and it's not the first time he's been poor when he's lost his defensive partner. I'm not sure what Hyam is playing at, he seems a petulant character as seen by his elbow on the goalie against Norwich.
Travis has obviously been affected by the changes, he's not been the same player - possibly wasn't fully fit, rushed back, and missed Tronstad when he returned. Now his head has dropped with the results.
Tronstad wasn't fully fit when he returned, though he was better against Cardiff.
At Stoke and Derby Pears was especially poor and back to gifting the opposition opportunities. I'm not sure what a manager can do about that.
I'm not sure if Ismael is the right appointment, I defended Eustace last year even though I wasn't sure about him for similar reasons. The general state of the club is so muddy at the moment there's no way of knowing if it's his influence, the players or just that he's come in at a bad time. I've seen it so many times before under previous managers.